Identification of metabolic changes leading to cancer susceptibility in Fanconi anemia cells

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Authors

ABAD Etna SAMINO Sara GRODZICKI Robert L. PAGANO Giovanni TRIFUOGGI Marco GRAIFER Dmitry POTĚŠIL David ZDRÁHAL Zbyněk YANES Oscar LYAKHOVICH Alex

Year of publication 2021
Type Article in Periodical
Magazine / Source Cancer Letters
MU Faculty or unit

Central European Institute of Technology

Citation
Web fulltext
Doi http://dx.doi.org/10.1016/j.canlet.2020.12.010
Keywords Fanconi anemia; Cancer predisposition; de novo purine biosynthesis; Fumarate; Purinosome; Metabolic reprogramming
Description Fanconi anemia (FA) is a chromosomal instability disorder of bone marrow associated with aplastic anemia, congenital abnormalities and a high risk of malignancies. The identification of more than two dozen FA genes has revealed a plethora of interacting proteins that are mainly involved in repair of DNA interstrand crosslinks (ICLs). Other important findings associated with FA are inflammation, oxidative stress response, mitochondrial dysfunction and mitophagy. In this work, we performed quantitative proteomic and metabolomic analyses on defective FA cells and identified a number of metabolic abnormalities associated with cancer. In particular, an increased de novo purine biosynthesis, a high concentration of fumarate, and an accumulation of purinosomal clusters were found. This was in parallel with decreased OXPHOS and altered glycolysis. On the whole, our results indicate an association between the need for nitrogenous bases upon impaired DDR in FA cells with a subsequent increase in purine metabolism and a potential role in oncogenesis.
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